Previous year MCQs

General science UPPSC 2022 GS-I
Question

Thermodynamically the most stable form of carbon is

Answer & Solution

Answer: (Detailed Solution Below)

Option C: Graphite

Detailed Solution:

The correct answer is “Graphite”.
The thermodynamically most stable form of carbon is graphite.
Graphite is more stable than diamond, coal, and fullerenes under standard conditions (25°C and 1 atmosphere of pressure). This stability arises because graphite has a lower Gibbs free energy than the other allotropes, making it the most stable form of carbon at room temperature and pressure.

The most common use of graphite is in pencils, where it leaves a black mark on paper.

Similar Questions:

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II. Chittagaon Armoury Raid
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Code :
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  2. B) I, III, IV and II
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